Oscar brxnler



(NO Model.)

0. BRNLER.

PUMP.

No. 480,707. Patented Aug. 16, 1892.

vUNITED STATES PATENT OEEICE.

OSCAR BRNLER, OF EILENBURG, ASSIGNOR TO I. M. GROB &; CO., OF EU'IRITZSCH-LEIPZIG, GERMANY.

PUMP.

SPECIFICATION forming part of Letters Patent No. 480,707, dated August 16, 1892.

Application filed May 10, 1892.

To @ZZ whom it may concern:

Be it known that I, OSCAR BRNLER, a subject of the Emperor of Germany, and a resident of Eilenburg, in the Empire of Germany, have invented a new and useful Improvement in Pumps, of which the following is a specification.

My invention relates more particularly to pumps for measuring and conveying the petroleum for petroleum-motors.

The here annexed drawing gives a longitudinal section of apump constructed according to this present invention.

In the chamber c the pistons a and b, between leather sleeves or other convenient packing material, move air-tight up and down. Channel d is the inlet for the liquid and channel e the outlet for the same. O11 the piston b being pressed up by the spring g the communication between channel d and the notch e" iu the piston b is interrupted. The quantity of petroleum contained in space a is compressed and pressed up, together with piston w, until the notch t' in piston a communicates with the outlet-channel e. When this cornmunication is established, the upper piston o, which might with respect to its technical effect be properly called a slide, is stopped, while the lower piston b moves still farther upward and displaces a quantity of petroleum precisely measured, according to its advance.

Serial No. 432,526' (No model.)

When the piston has reached its highest position, the piston b is drawn down by a lever or other part acting upon the nut h. At the same time the piston or slideafollows through the action of spring f, this movement simultaneously interrupting the connection of its notch e' with channel e. The piston a is soon stopped, while b moves farther and is arrested subsequently by abutment lo. This increase of space has a suctional effect and causes the space c to fill afresh with petroleum.

The quantity of petroleum to be conveyed at each stroke of the pistons a and b can be precisely determined by displacing the nuts h on the piston Z7. When the nuts h are screwed higher, the spring g will not press the piston b so high, as would be the case if the nuts 7i Were screwed lower. Thereby the quantities of petroleum to he conveyed by the pump can be determined at pleasure.

What I claim is- In a pump, the combination of the operated piston b, having a notch i', with the piston a provided with a notch 'L' and being under the action of the spring f, and with the chamber o, having an inlet-channel d and an outletchannel e, as and for the purpose s et forth.

OSCAR BRUNLER.

Witnesses:

CARL BORNGEAEBEE, ANTON WIEMCZYPE. 

